GAME - DEFINITION
game of tenpins consists of ten frames player delivers two balls in each of the first nine Frame unless a strike is scored, In the tenth frame player delivers three balls if a strike or spares is scored. Every frame must be completed by each player bowling in regular order.
Except when a strike is scored, the number of pins knocked down by the player's first delivery is to be marked in the small square in the upper left- hand corner of the frame, and the number of pins knocked down by the player's second delivery is to be marked in the upper right- hand corner. If non of the standing pins are knocked down by the second delivery in the frame, the score sheet shall be marked with a(-).
A strike is made when a full setup of pins is knocked down with the first delivery in a frame. It is marked by an (x) in the small square in the upper left-hand corner of the frame. The count for one strike is 10 plus the number of pins knocked down on the players next two deliveries.
Two consecutive strikes is a double. The count for the first strike is 20 plus the number of pins knocked down with the first delivery following the second strike.
Three consecutive strikes is a triple. The count for the first strike is 30. to bowl the maximum score of 300 the player must bowl 12 strikes in succession.
A spare is scored when pins left standing after the first delivery are knocked down with the second delivery in that frame. It is marked by (/) in the small square in the upper right -hand corner of the frame.
When a player fails to bowl down all ten pins after two deliveries in a frame, unless the pins left standing after the first delivery constitute a split, it is called an open fame.
A split is a setup of pins left, standing after the first delivery, provide the head pin is down and atleast one pin is down between two or more standing pins. A split is usually designated by a (O).
DEFINITION OF A FOUL
A foul occurs when a part of the player's foot goes beyond the foul lines and touches any part of the lane during or after delivery.